| 年度 | 实际值 |
|---|---|
| 1992 | 71.76 |
| 1993 | 72.83 |
| 1994 | 74.18 |
| 1995 | 75.32 |
| 1996 | 75.6 |
| 1997 | 77.5 |
| 1998 | 78.43 |
| 1999 | 79.04 |
| 2000 | 82.5 |
| 2001 | 89.58 |
| 2002 | 89.98 |
| 2003 | 91.47 |
| 2004 | 92.94 |
| 2005 | 96.36 |
| 2006 | 97.84 |
| 2007 | 101.25 |
| 2008 | 103.03 |
| 2009 | |
| 2010 | 104.27 |
| 2011 | 99.2 |
| 2012 | 99.8 |
| 2013 | 93.1 |
| 2014 | 93.8 |
| 2015 | 100.37 |
| 2016 | 100 |
| 2017 | 101 |
| 2018 | 101 |